A Tutor

1. One who teaches another (usually called a student, learner, or tutee) in a one-on-one or small-group interaction.
2. (Britain) A university officer responsible for students in a particular hall.
3. (obsolete or Quebec law) One who has the charge of a child or pupil and his estate; a guardian.
4. (trading card games) A card that allows one to search one's deck for one or more other cards.

Synonyms

• (one who teaches): preceptor